CVE-2026-43122

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> ACPI: processor: Update cpuidle driver check in __acpi_processor_start()<br /> <br /> Commit 7a8c994cbb2d ("ACPI: processor: idle: Optimize ACPI idle<br /> driver registration") moved the ACPI idle driver registration to<br /> acpi_processor_driver_init() and acpi_processor_power_init() does<br /> not register an idle driver any more.<br /> <br /> Accordingly, the cpuidle driver check in __acpi_processor_start() needs<br /> to be updated to avoid calling acpi_processor_power_init() without a<br /> cpuidle driver, in which case the registration of the cpuidle device<br /> in that function would lead to a NULL pointer dereference in<br /> __cpuidle_register_device().